I've recently quoted on a big commercial job. I'm thinking of getting 1) a bigger tank or 2) getting a trailer. If I get a bigger tank I'm going to need a bigger van. If I get a trailer I'm going to have to get a tow bar fitted and then get a trailer. The thing is I think £2700 for a trailer is a bit much when you think that to buy an empty trailer and all the wfp kit works out about £700. Opinions please guys?